How can we improve Outlook on the web?

Preview pane always show some new emails, but it is not possible to click on them

At the top of the email list, I have a kind of reminder listing the number of unread email I have, and the first (or last) of such emails (I have a screenshot, but it is not possible to upload files). It is possible to click on the reminder, but clicking does not lead to anything, so I cannot easily go back to the unread emails I am being reminded of.